(or change the `go` directive to `Go 1.21` (no minor version) apparently) On Tue, Aug 22, 2023 at 7:52 AM Axel Wagner <axel.wagner...@googlemail.com> wrote:
> By coincidence, I was just reading https://go.dev/blog/toolchain and > realized I put `GOTOOLCHAIN=local` into my ~/.confiig/go/env a while ago, > so as to not have the Go tool transparently download different versions. If > I remove that, I can indeed reproduce the behavior you are seeing. > So, my recommendation for experimenting would be to run `go env -w > GOTOOLCHAIN=local`. > > On Tue, Aug 22, 2023 at 12:51 AM Hein Meling <hein.mel...@gmail.com> > wrote: > >> Thanks Axel for your reply. That's interesting. I'm able to run your >> example just fine. However, using a different go.mod file with the content >> below (and a longer code example with iteration over a LevelDB thing... not >> able to provide the code), I get: >> >> % gotip version >> go version go1.21.0 darwin/arm64 >> >> % gotip run iter.go >> # command-line-arguments >> ./iter.go:48:25: cannot range over SnapshotHash(ldb, nonce) (value of >> type Seq2[uint64, error]) >> >> module iter >> >> go 1.21.0 >> >> require ( >> github.com/opencoff/go-fasthash v0.0.0-20180406145558-aed761496075 >> github.com/syndtr/goleveldb v1.0.0 >> ) >> >> require ( >> github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect >> golang.org/x/net v0.10.0 // indirect >> golang.org/x/sys v0.11.0 // indirect >> golang.org/x/text v0.12.0 // indirect >> ) >> >> >> On Sunday, August 20, 2023 at 10:59:20 PM UTC-7 Axel Wagner wrote: >> >>> Hm. For me, it still enables the rangefunc experiment, even though >>> go.mod says go 1.21: >>> >>> mero@vetinari ~/tmp/x$ gotip version >>> go version devel go1.21-ca691a8566d Tue Jul 18 10:30:20 2023 -0400 (w/ >>> rangefunc) linux/amd64 >>> mero@vetinari ~/tmp/x$ cat go.mod >>> module x >>> >>> go 1.21 >>> mero@vetinari ~/tmp/x$ cat x.go >>> package main >>> >>> import "fmt" >>> >>> func main() { >>> s := []int{1, 2, 3} >>> for v := range All(s) { >>> fmt.Println(v) >>> } >>> } >>> >>> func All[T any](s []T) func(yield func(T) bool) bool { >>> return func(yield func(T) bool) bool { >>> for _, v := range s { >>> if !yield(v) { >>> return false >>> } >>> } >>> return true >>> } >>> } >>> mero@vetinari ~/tmp/x$ gotip run x.go >>> 1 >>> 2 >>> 3 >>> >>> On Fri, Aug 18, 2023 at 10:54 PM Hein Meling <hein....@gmail.com> wrote: >>> >>>> Hi all, >>>> >>>> I wanted to play around with the new range func CL >>>> <https://github.com/golang/go/issues/61405>. >>>> >>>> Doing simple stuff works just fine, but if I need to import packages to >>>> construct my custom iterator func, the go/gotip command insists on a go.mod >>>> file, which effectively resets the go version to 1.21.0 (due to go.mod), >>>> instead of the "(w/ rangefunc)" CL. >>>> >>>> Anyone know any workarounds for this? >>>> >>>> Thanks, >>>> :) Hein >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "golang-nuts" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to golang-nuts...@googlegroups.com. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/golang-nuts/f01ff376-b789-4d8a-89f5-165a6527325fn%40googlegroups.com >>>> <https://groups.google.com/d/msgid/golang-nuts/f01ff376-b789-4d8a-89f5-165a6527325fn%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/09e1c142-0532-4d05-8dbe-6114fefdc2fdn%40googlegroups.com >> <https://groups.google.com/d/msgid/golang-nuts/09e1c142-0532-4d05-8dbe-6114fefdc2fdn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAEkBMfHZwz-KReuHL0c8aJ%2BOZ%3DVNVuSDUWJjv-khoN1fvu8oCg%40mail.gmail.com.
